import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

/**
 * @author ganbo
 * @date 2022/10/16 16:34
 */
public class T {


    public static void main(String[] args) {
        Map<String, String> map = new ConcurrentHashMap<>(9);
        map.put("name", "test");
    }

}
